Common stubborn diseases of vacuum brick machine and the secret recipe for cure!

Common faults and solutions of vacuum brick machine:

After using the vacuum brick machine for a period of time, all kinds of small faults will leak out. In the face of such faults, many mechanics are unable to take measures, do not know how to start, and do not know where the pathogens of these small faults are? Some mechanics simply turned a blind eye, which eventually led to greater failures, delayed normal production, and caused great economic losses to the boss of the sintering brick factory. The following is the common faults and solutions of vacuum brick machine summarized by experts from Gongyi Wangda machinery factory, which will completely help you deal with small faults of vacuum brick machine.

Common faults and solutions of vacuum brick machine:

1、 Unstable main engine current

1. Production reason:

(1) Uneven feeding.

(2) The bearings of the main motor are damaged or poorly lubricated.

(3) The heater of a certain section fails to heat.

(4) The screw adjusting pad is wrong, or the phase is wrong, and the components interfere.

2. Treatment method:

(1) Check the feeder and eliminate the fault.

(2) Repair the main motor and replace the bearing if necessary.

(3) Check whether each heater works normally, and replace the heater if necessary.

(4) Check the adjusting pad, pull out the screw and check whether the screw interferes.

2、 The main motor cannot be started

1. Cause:

(1) There is a mistake in the starting procedure.

(2) There is a problem with the main motor thread, and whether the fuse is burned.

(3) The interlocking device related to the main motor works

2. Treatment method:

(1) Check the procedure and restart in the correct order.

(2) Check the main motor circuit.

(3) Check whether the lubricating oil pump is started, and check the status of the interlocking device related to the main motor. The oil pump cannot be opened, and the motor cannot be opened.

(4) If the induction power of the frequency converter is not discharged, turn off the main power supply and wait for 5 minutes before starting.

(5) Check whether the emergency button is reset.

3、 The discharge of the machine head is blocked or blocked

1. Cause:

(1) A certain section of the heater does not work, and the material plasticization is poor.

(2) The operating temperature is set too low, or the molecular weight distribution of the brick is wide and unstable.

(3) There may be foreign matters that are not easy to melt.

2. Treatment method:

(1) Check the heater and replace it if necessary.

(2) Verify the set temperature of each section, and negotiate with the technologist to increase the set temperature value if necessary

(3) Clean and check the extrusion system and head.

4、 The starting current of main power is too high

1. Cause:

(1) Insufficient heating time and high torque.

(2) A certain section of heater does not work.

2. Treatment method:

(1) When driving, use hand turning. If it is not easy, extend the heating time or check whether the heaters in each section work normally.

5、 Abnormal sound from main motor

1. Cause:

(1) The main motor bearing is damaged.

(2) A thyristor in the thyristor rectifier circuit of the main motor is damaged.

2. Treatment method:

(1) Replace the main motor bearing.

(2) Check the silicon controlled rectifier circuit and replace the silicon controlled components if necessary.

6、 The temperature rise of main motor bearing is too high

1. Cause:

(1) Poor bearing lubrication.

(2) The bearing is seriously worn.

2. Cause:

(1) Check and add lubricant. Check the motor bearing and replace it if necessary.

7、 Unstable head pressure

1. Cause:

(1) The speed of the main motor is uneven.

(2) The rotation speed of the feeding motor is uneven, and the feeding volume fluctuates.

2. Treatment method:

(1) Check the main motor control system and bearings.

(2) Check the feeding system motor and control system.

8、 Low lubricating oil pressure

1. Cause:

1) The pressure setting value of the pressure regulating valve of the lubricating oil system is too low.

(2) The oil pump is faulty or the oil suction pipe is blocked.

2. Treatment method:

(1) Check and adjust the pressure regulating valve of the lubricating oil system.

(2) Check the oil pump and oil suction pipe.

9、 The automatic screen changing device is slow or ineffective

1. Cause:

(1) Low air pressure or oil pressure.

(2) Air leakage (or oil leakage) of cylinder (or hydraulic station)

2. Treatment method:

(1) Check the power system of the screen changing device.

(2) Check the sealing condition of the cylinder or hydraulic cylinder.

10、 Safety pin or safety key is cut off

1. Cause:

(1) Excessive torque of extrusion syste

(2) The connection between the main motor and the input bearing is not concentric

2. Treatment method:

(1) Check whether the extrusion system has metal and other objects entering the stuck screw. At the beginning, check whether the preheating and heating time or heating value meet the requirements.

(2) Adjust the main motor

11、 Sudden drop in extrusion

1. Cause:

1) The feeding system fails or there is no material in the hopper

(2) The extrusion system enters the hard clamping screw, so that the material cannot pass through

2. Treatment method:

(1) Check the level of the feeding system or hopper

(2) Check and clean the extrusion system.

Customers and friends, after reading the above summary, have your eyebrows stretched out? In case of a small fault of the brick machine, don’t panic, let alone be unprepared. You can check and repair the vacuum brick machine according to what experts say. Only after finding the pathogen can you cure it by applying the right medicine to the case, otherwise, there will be endless trouble.